Find the derivative.y = 

A. 9 cos (x4) - 9 sin (x4)
B. 8 cos (x4)
C. 9 cos (x4)
D.  cos (x4)

Answer: D

Mathematics

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Carry out the indicated unit conversion. Round your answer, if appropriate.Convert a distance of 14 miles into yards; there are 1760 yards in a mile.

A. 25,480 yards B. 24,640 yards C. 2464 yards D. 26,320 yards

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Solve. = 5

A. 30 B. 20 C. 100 D. 25

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Perform the indicated operations. ?  ÷ 

A.  
B.  
C.
D. 1

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Write the inequality in interval notation.x > 4 or x < 4

A. (4) B. (4,?) C. (-?, 4) ? (4,?) D. (-?,4)

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